Soul of a True Hero

Flying, first strike
Spirits you control get +0/+X and vigilance
if you control X or more creatures.
Spirit creature spells you cast cost {x} less to cast
if you control a Gideon planeswalker in exile or in
a graveyard. Whenever a creature enters the battlefield under you control, create a 1/1 white
Spirit creature token with flying.
Some say they can feel Gideon's ghost marching down
the streets of Ravnica, rallying an army of noble spirits.